APA (7th ed.) Citation

A, E. H., J, M., H, S., & A, D. (2009). Validation of the Asthma Control Test questionnaire in a North African population. Respiratory medicine, 103 Suppl 2, S30. https://doi.org/10.1016/S0954-6111(09)70025-3

Chicago Style (17th ed.) Citation

A, El Hasnaoui, Martin J, Salhi H, and Doble A. "Validation of the Asthma Control Test Questionnaire in a North African Population." Respiratory Medicine 103 Suppl 2 (2009): S30. https://doi.org/10.1016/S0954-6111(09)70025-3.

MLA (9th ed.) Citation

A, El Hasnaoui, et al. "Validation of the Asthma Control Test Questionnaire in a North African Population." Respiratory Medicine, vol. 103 Suppl 2, 2009, p. S30, https://doi.org/10.1016/S0954-6111(09)70025-3.